根据句意,用括号中所给词的正确形式填空。 1. He is very young but he looks _____ (health). 2.-When did he _____the game _____ (design)? -In 2005. 3. Nothing in the world is _____ (possible) if you put your heart into it. 4. We are told _____ (not laugh) at the people in trouble. 5. No matter where we are, We should do something _____ (use). 6. One word can have several _____ (mean). 7. Half a century _____ (pass) since he came to China.